Quick comparison # App Pricing Verified price Open source Platforms Verified facts Score 1 AirbyteOpen source $20/month (cloud) Yes Web, Self-hosted 5 of 5 83.8 2 Google BigQueryFree plan + paid $6.25 per TiB scanned (on-demand) No Web 4 of 4 64.0 3 Apache AirflowOpen source — Yes Linux, Self-hosted, Web 5 of 5 50.0 4 Es EstuaryFree plan + paid $0.50/GB + $100/mo per connector No Web 5 of 5 42.3 5 KeboolaFree plan + paid — No Web 4 of 4 42.3
1 Best for: Data engineers who want open-source ELT they can self-host and extend with custom connectors
Open source Self-hostable Web, Self-hosted
Why switch from Fivetran
Open-source engine you can self-host for free, with a large connector catalogue and a cloud option.
Pros Core engine is free to self-host with no row-based fees Connector Builder and CDK make custom sources straightforward Same pipelines can move between self-hosted and managed cloudCons Self-hosting means you handle upgrades, scaling and failed syncs Community connectors vary in quality and maintenance SSO and faster sync schedules are limited to higher paid plansHow this score is calculated Editorial fit ×0.3 100
Reviews ×0.3 63
Clicks (90 days) ×0.15 100
Freshness ×0.15 100
Votes ×0.1 50
0 counted reviews, 0 up and 0 down votes. Full formula
2 Best for: Teams on Google Cloud or GA4 who want a warehouse with no servers to manage
Free plan + paid Web
Why switch from Fivetran
BigQuery Data Transfer Service schedules loads from Google Ads, GA4, YouTube and cloud storage into BigQuery without a separate ELT tool.
Pros Fully serverless, with nothing to size or keep running Monthly free query and storage allowance for small projects Native exports from Google Analytics 4 and other Google products Machine learning models can be trained in plain SQLCons Tied to Google Cloud; there is no self-hosted version On-demand billing by data scanned can surprise teams that query wide tables Less control over performance tuning than with your own clusterHow this score is calculated Editorial fit ×0.3 34
Reviews ×0.3 63
Clicks (90 days) ×0.15 100
Freshness ×0.15 100
Votes ×0.1 50
0 counted reviews, 0 up and 0 down votes. Full formula
3 Best for: Data engineering teams that want a proven, free orchestrator with a huge integration ecosystem
Open source Self-hostable Linux, Self-hosted, Web
Why switch from Fivetran
Open-source orchestrator for writing your own ingestion pipelines in Python, trading managed connectors for control and no usage-based fees.
Pros Free and open source with a very large community Pipelines are plain Python, so they can be generated dynamically Hundreds of ready-made operators for clouds and data tools Managed versions available from several cloud providersCons Running scheduler, workers and metadata database yourself takes real ops effort Local development and testing are clunkier than in newer tools like Prefect or Dagster No official hosted service from the Apache project itselfHow this score is calculated Editorial fit ×0.3 38
Reviews ×0.3 63
Clicks (90 days) ×0.15 0
Freshness ×0.15 100
Votes ×0.1 50
0 counted reviews, 0 up and 0 down votes. Full formula
4 Es Best for: Data teams needing low-latency database replication into a warehouse at a predictable per-GB price
Free plan + paid Web
Why switch from Fivetran
Real-time CDC billed per GB and per connector rather than by monthly active rows.
Pros Log-based CDC with streaming or scheduled delivery per destination Free tier with no credit card Pricing per GB and per connector is easy to estimate Stores captured data in your own bucket for replaysCons Connector fees add up quickly when you run many sources SSO and HIPAA BAA are Enterprise-only Fewer SaaS connectors than the largest ELT vendorsHow this score is calculated Editorial fit ×0.3 12
Reviews ×0.3 63
Clicks (90 days) ×0.15 0
Freshness ×0.15 100
Votes ×0.1 50
0 counted reviews, 0 up and 0 down votes. Full formula
5 Best for: Teams that want ingestion, storage and transformations in one data platform without stitching tools
Free plan + paid Web
Why switch from Fivetran
Bundles connectors with a managed warehouse, transformations and orchestration, with a free plan.
Pros Free plan with monthly compute minutes, no card needed Includes a managed warehouse backend SQL and Python transformations plus a visual flow builder Very large connector catalogueCons Free plan projects run only in Azure EU and lack data sharing Enterprise pricing is not published All-in-one design is more than needed if you only want connectorsHow this score is calculated Editorial fit ×0.3 12
Reviews ×0.3 63
Clicks (90 days) ×0.15 0
Freshness ×0.15 100
Votes ×0.1 50
0 counted reviews, 0 up and 0 down votes. Full formula